& all the US-based corporate social media… Facebook, Instagram, Threads, WhatsApp, Snapchat, Reddit, Discord, LinkedIn, & GitHub.

The VC-funded ones too like BlueSky

If we care about the planet & sustainability, we would not be recommending a eventual-consistency model for chat communications. Matrix’s protocol is so wasteful & expensive.

Matrix is centralized around Matrix.org or servers they run tho. Since the protocol is a big data/metadata sync by design & medium–large-sized servers are expensive to run, almost all of metadata is with Matrix.org—of which was originally funded my Israeli intelligence & I wouldn’t be surprised if they were getting data out of it to this day.

If they haven’t already, SimpleX registers a URI handler, you could put an ID in a vCard just like your contacts on XMPP show up in a messaging client.

They reason this happens more often with Signal is a) Signal requires a phone number (which is not good for your privacy) b) your contact is more likely to put in their phone number but many forget to add other IM protocols to their vCard & the default contact managers do not make this very discoverable.

So they have Carbons? Took them long enough.